What are the causes of wear or damage caused by the molding tool?
(1) the first easy damaged parts is the guide pillar and guide sleeve, because with the two sliding parts long-term frequent mutual sliding movement, sometimes interference, lubricating oil is insufficient, etc., resulting in two parts wear and tear.
The parting combination surface of the mould and the surface of the cavity forming products, due to the long opening and closing actions, caused by extrusion, impact, etc., make the edge sharp corners blunt;Frequent high - pressure injection and stripping, remove the parts, make the working face wear or corrode the pit.
In the cavity, the metal insert is impacted by the high pressure molten material, which is inclined or deformed, resulting in indentation or pit in the cavity surface.
In the mold, the positioning stop and sliding block with the opening and closing die are deformed or worn by extrusion.
There is a sharp Angle in the structure of the mold, or the two planes are transferred to the right Angle due to the influence of the stress. After working for a period of time, cracks appear here.